US Patent Issued to GM GLOBAL TECHNOLOGY OPERATIONS on Feb. 17 for "High strength gradient steels" (Michigan Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,100, issued on Feb. 17, was assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit).

"High strength gradient steels" was invented by Diptak Bhattacharya (Royal Oak, Mich.), Hassan Ghassemi-Armaki (Northville, Mich.), Andrew Clay Bobel (Troy, Mich.) and Anil K. Sachdev (Rochester Hills, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A gradient steel includes a first layer, a second layer near a first surface of the first layer, and a third layer near a second surface of the first layer. The first layer includes a first ferrite phase volume. The second and third layers include a second ferrite phase volume greater than the first ferrite phase ...